Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century.

Proc Natl Acad Sci U S A · 2020 · PMC7382209 · PMID 32632003

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hedged sentence

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closest p

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highly significantno p-value reported

The highly significant phasing between the entirely independent scPDSI reconstruction and historical records add considerable confidence to both proxies as reliable sources of information for past hydroclimate variations across SA during past centuries.

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